Cannot attach databases with same ID to different web applications
Databases with same internal ID
cannot be attached web applications even if the databases have different name.
If we try attach the database with same id, we would be get “another object in
this farm already contains the same ID” as shown in below image.
We ran below commands to find and delete the database
Get-SPDatabase | where{$_.Name -eq "webappliction
Name"}
Remove-SPcontentdatabase –identity “ID of the DB”
The database attached successfully after we removed the
existing database.
